Shock-absorbing spring for vehicles.



J. B. KING. SHOCK ABSORBING SPRING FOB VEHICLES.

APPLIOATIOB FILED HOV. 15, 1913.

Patented Aug. 18, 1914,

WNII

JOHN B.

snoer-anse GF LONDON, ENGLAND.

SEING FOR VEHICLES.

Application led 'november 15, 1813. Serial No. S01 ,17.

T 0 all w'z'o'm. it m (11,/ Concern.'

Be itv known that l; JOHN BERNARD KING,

vstrength of suchsprin'gs is iucre .t at the same time 'increasing the vstabili-tj." of the body of -the vehicle, such springs possessing valuable shockfab'sorbmg qualities. l My invention consists in applying on the upper side of the 'ordinary axle spring of the leaf type a supplementamr spring which is irmly secured to the end of the above spring, the said vsupplementary spring extending toward the' axle. This spring has an eye formed at.the end thereof through which a bearing pin 1s passed, the pinvserving to support link-'plates .which connect the upper spring with a. thicker plate spring belowthe leaf axle spring.' This plate spring is secured alt one end to a scroll iron or spring fixed to the body of the vehicle, the opposite end being provided withfan adjustable' set screw which bears against the underside of.

the leaf spring. The end of the leaf spring has slotted plates secured thereto, the slots in the plate engaging witlra pin on the scroll iron or spring secured to the body of the vehicle'. l

In order that my invention may be readily understoodv reference is made to the accompanylng drawings in Which:-

Figure 1 is aside elevation et the shockabsorbing spring. Fig. 2 is a cross section thereof on line of Fig. l..

A is an 'axle spring of the ordinary leaf type 'to the en d of which I secures single fiat spring B in any suitable mann This flat spring extends in an upward dii etion aS shown, above the spring A, and at the end thereof I form an eye, through which I pass a pin B. This pin passes through and sus'- pends link plates C which connect tue spring B with a thicker lever plate spring D by means of apin or bolt D', one end of the spring D being connected by a shackle G to a scroll iron or spring H secured te the body of the vehicle. At the other end of the spring D I provide an adjustable set screw E with nuts E for adjusting the screw E on the lower end of the auxiliary spring` D to compensate for variations in weight of body and load. The slots F in thelinks F permit the springs A and D to move independently of each other. v

My invention operates -in the following manner z-Under normal conditions or when only a slight shock occurs the main axle spring A is lifted and the shock partially transmitted to the supplement-aryspring B and spring D, the slots in the links F permit ting the main spring and single spring B to act independently of springl). Should however a. violent shock occur the main spring -A is driven up against the spring B and consequently the links C transmit the :reduced shock to the spring D which in turn transmits the still further reduced shock to the body spring or scroll iron H. In the meantime the links F have risen to their fullest extent. But under ordinary conditions this.\vould only occur occasionally, the tension on the spring D being adjusted by set scrwl to meet all ordinary shocks.

I claim tl: A shock-z ibsorbingA device, comprising the Acombination with a main axle spring of leaf' spring type, of a supplemental leaf spring arranged above the main spring and fixed to one end thereof, a plate spring arranged below the main spring linked intermediate its length to the supplemental Spring and having one end thereof connected by. .a shackle to a suitable part of the frame fof the vehicle, and its other end engaging against the main spring, and a pair of slot` ted links connecting the main spring to the shackle pin of the plate spring, substantially as set forth. v

2. A. shock-absorbing device, comprising the combination with a main axle spring of leaf type, of a supplement-al leaf springl arranged above the main spring and fixed to one end thereof, a plate spring arranged below tlie main spring, linked intermediate its length to the supplemental spring, and having one end thereof connected by a shackle4 to a suitable part of the frame of the vehicle and its free end engaging against the main 'spring, adjusting means onthe free end of' the plate spring operable to set the same nearer to or farther from the main spring, and a pair of slotted links connecting the Jmain spring and the shackle pin of the plate spring, substantially as set forth.

3. A shock-absorbing device comprising the combination with an axle leaf spring, of a supplementary spring located above said leaf'spring, a thicker' plate sp1-ing located beneath said leaf spring, attach `ent means fixing one end of the suppleme tary spring to the end of the leaf spring, attachment means connecting one end of the plate spring to a suitable part of' the frame of the vehicle sch as a scroll iron, a pair of slotted linksv connecting the end of the leaf spring to the latter having a pin which engages through the slot in each link on the scroll iron, a pair of link plates pivoted to the free end of the supplementary spring and to the platefl spring, and jan adjustable set screw on the free end of the'plate spring, as set forth.

In testimony whereof I have hereunto set my hand in presence of two subscribing wit- 

